It is time to get down to do some serious work 这句话哪里错

It is time to get It is time to get It is time to get down to do some serious work 这句话哪里错 造句it is rude to do,have a great time,get used to,make appointments it is time to do sth过去式 It is time to do sth It is time for sIt is time to do sthIt is time for sthIt is time for sb.to do sth 是it is time to do sth还是 it is the time to do sth It is time to get up的同义句 time,it,is,get,to,up.连词成句 is,to,it,time,up,get连词成句 it`s time to get 造句 it's time to do、it's time for sth.、get ready to do、get ready for、get sth.ready加上翻译 It is one is first time to do sth造句 it is time to do sth 和it is time for sth有区别么 it is time to do等于it is time for doing? It is time to do something.和It is time for something.有什么区别 It is time for something.和It is time to do something.有什么区别? It is time to do sth和It is time for sth有区别吗?